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Finding the Fourth Proportional to 18,636.49, 27,955.91 and 7,542.97

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Solution

The fourth proportional to 18,636.49, 27,955.91 and 7,542.97 is: 11,314.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.49 : 27,955.91 = 7,542.97 : x
  2. Step 2: Convert to fraction form
    18,636.49/27,955.91 = 7,542.97/x
  3. Step 3: Cross multiply
    18,636.49x = 27,955.91 × 7,542.97
  4. Step 4: Simplify right side
    18,636.49x = 210,870,552.74
  5. Step 5: Solve for x
    x = 210,870,552.74/18,636.49
  6. Step 6: Final answer
    x = 11,314.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.